Taper attachment for lathes.



PATENTBD APR, 7,- 1903 F. R. LEE. TAPER ATTACHMENT FOR LATHES.

APPLICATION FILED JUNE 14, 1902.

H0 MODEL. x

UNITED STATES PATENT OFFICE.

FRANK R. LEE, OF LEADHLLL, ARKANSAS.

TAPER ATTACHMENT F OR LATHES.

SPECIFICATION forming part of Letters Patent N 0.-724,592, dated April 7, 1903.

Application filed June 14, 1902.

To all whom it may concern:

Be it known that I, FRANK R. LEE,.& citize of the United States, residing at Leadhill, in the county of Boone and State of Arkansas, have invented new and useful Improvements in Taper Attachments -for Lathes, of which the following is a specification.

My invention relates to improvements in taper attachments for lathes, and contemplates the provision of a taper attachment susceptibleof quick and easy application to ordinary turning-lathes and one of whichwhile Very simple and inexpensive in construction is elficient and reliable in operation and is possessed of a considerable range of adjustment.

With the foregoing in mind the invention will be fully understood from the following description and claims when taken in conjunction with the accompanying drawings, in Which Figure l is a plan view of a portion of a lathe with my improved taper attachment properly applied thereto; Fig. 2, a transverse section taken in a plane at one side of the lathe-carriage; Fig. 3, a transverse section taken in the plane indicated by the broken line 3 3 of Fig. 1, and Fig. 4 a detail section taken on the broken line 4 4 of Fig. 2.

Similar letters of reference designate corresponding parts in all of the views of the drawings, referring to which A A are the longitudinal bars or shears of a lathe-bed; B, a carriage movable longitudinally of the lathe on the bars A; O, a toolhead movable transversely of the lathe on the carriage, and D a cross-feed screw, through the medium of which the tool-head may be moved transversely by the turner'when desired. These parts maybe and preferably are of the ordinary well-known construction, the screw D being susceptible of disengagement or disconnection from the tool-head when it is desired to use my improved taper attachment, which I will now proceed to describe.

In the preferred embodiment of my invention the taper attachment comprises crossbars E, each of which is provided at an intermediate point of its length with a curvilinear slot a and at its ends with clamping-plates b and bolts and nuts 0 01, through the medium,

of which it may be adjustably fixed on the Serial N5. 111,664.. (No model.)

bars A of the lathe-bed, a taper-bar F, extending between the bars E and having a longitudinal slot 6 extending the major portion of its length, bolts f, extending through the slots a of bars E and the end portions of 'the bar F and serving in conjunction with nuts g to adjustably fix the bar F with respect to the bars E and the lathe-bed, and means fixed with respect to the tool-head C and having a portion disposed and movable in the slot e of bar F. This means is preferably a clevis G, which straddles the carriage B and tool-head G and is fixed to opposite sides of the latter by bolts 9 and is provided with a depending projection h, movable in the slot e of bar F.

It will be appreciated from the foregoing that my improved attachment is susceptible of ready application to an ordinary turninglathe without involving alteration of any of the parts of the lathe and is adapted to be as readily disconnected and removed from the lathe when desired. 4

The interposition of the bars E between the bars or shears A of the lathe-bed entails arranging the bar F between said bars or shears A; but this is an advantage rather than an objection, since it conduces to the compact ness of the lathe.

In the practical operation of the lathe equipped with the improved attachment the bar F- is adjustably fixed at the angle desired from the line of movement of the carriage B, and then after the work is properly mounted in the lathe and the tool-head C is released from the cross-feed screw D the lathe is started, and the carriage B is moved longitudinally of the lathe by the turner rotating the shaft I, journaled in the carriage, which shaft is equipped with a gear J, intermeshed with a rack K on the lathe-bed. When the carriage B is thus moved longitudinally, the projection h of the clevis G moving in the slote of bar F will cause the tool-head C to move transversely of the lathe and result inthe production of a tapered piece of work.

Notwithstanding the advantages of my improved attachment as pointed out in the foregoing, it will be seen that the attachment is simple and inexpensive. in construction and embodies no delicate parts such as are liable to get out of order after a short period of use.

be understood as confining myself to such specific construction andarrangement of parts, as such changes or modifications may be made in practice as fairly fall within the scope of,myclaims."

Having described myinvention, what l claim, and desire to secure byLettersPatent,

bearing in said clevis' an'd'arranged to bear against and fix the clevis to the tool-head'of' I the lathe.

2. The combination in 'a'lathe, 'of'the bed I I I having longitudinal bars or shears, cross-bars secured between said shears, a taper bar extending between and'conneeted to said cross-' bars, a carriage movable longitudinally of the 'lathe'on'thebed, a tool-head movable transversely of the lathe on the carriage,za

clevis straddling the carriageand tool-head,

and havinga depending portion engaging the taper bar, and bolts hearing in said clevis and bearing against the tool-head so as to fix the clevis thereto.

- [5 d1. An attachment for lathes comprising I I I I ---eross-bars adapted to be arranged between the shears'of a lathe, and havingelamping,

alnltestimony whereof I have hereunto set I y I y I, my hand in presence of two subscribing wito plates and bolts at their ends for fixing them nesses. on said shears, a taper bar extending between FRANK R I FF 20 and connected to'the cross-balsa c'levis'for' straddlingthe carriage and the tool-head of Witnesses: I I I I I I I I the lat11e;-saidclevis having a depending JOHN F. A. DECK,

portion engaging the taper bar, and bolts BERT LEE. I 

